# -*- coding:UTF-8 -*-
from bs4 import BeautifulSoup
import requests, sys

"""
类说明：下载《笔趣看》网小说《一念永恒》
author : zhanglibin
createtime: 2018-11-14
"""
class downloader(object):

	def __init__(self):
		self.server = 'http://www.biqukan.com'
		self.target = 'http://www.biqukan.com/1_1094/'
		self.names = []   #存放章节名
		self.urls = []    #存放章节链接
		self.nums = 0    #章节数


	"""
	函数说明：获取下载链接
	author：zhanglibin
	createtime：2018-11-14
	"""
	def get_download_url(self):
		req = requests.get(url = self.target)
		html = req.text
		div_bf = BeautifulSoup(html)
		div = div_bf.find_all('div', class_ = 'listmain')
		a_bf = BeautifulSoup(str(div[0]))
		a = a_bf.find_all('a')
		self.nums = len(a[15:])      #剔除不必要的章节
		for each in a[15:]:
			self.names.append(each.string)
			self.urls.append(self.server + each.get('href'))


	"""
	函数说明：获取章节内容
	params：
		target-下载链接
	return：
		texts-章节内容
	createtime：2018-11-15 

	"""
	def get_content(self,target):
		req = requests.get(url = target)
		html = req.text
		bf = BeautifulSoup(html)
		texts = bf.find_all('div', class_ = 'showtxt')
		texts = texts[0].text.replace('\xa0'*8,'\n\n')
		return texts


	"""
	函数说明：将爬取的文章内容写入文件
	params：
		name-章节名称
		path-路径
		text-章节内容
	modifiy：
		2018-11-15

	"""
	def writer(self, name, path, text):
		write_flag = True
		with open(path, 'a', encoding='utf-8') as f:
			f.write(name + '\n')
			f.writelines(text)
			f.write('\n\n')


if __name__ == "__main__":
	dl = downloader()
	dl.get_download_url()
	print('《一年永恒》开始下载：')
	for i in range(dl.nums):
		dl.writer(dl.names[i],'一年永恒.txt',dl.get_content(dl.urls[i]))
		sys.stdout.write("已下载： %.3f%%" % float(i/dl.nums) + '\r')
		sys.stdout.flush()
	print('《一年永恒》下载完毕')
























